Preventing night blindness and vision loss is helpful to the treatment of various eye diseases (vitamin A can promote the formation of photosensitive pigments in the eye);

2. Difference

A few dollars of vitamin A is the standard of Chinese medicine, and dozens of pieces of vitamin A are health care products. It is suggested to use the economy of traditional Chinese medicine.

3, medication precautions: excessive intake of vitamin A can cause poisoning.

4. Usage and dosage: Take it once a day after breakfast. The dosage is as follows.

1), the recommended daily intake of vitamin A. As far as the average adult male is concerned, 1000RE (or 5000IU) can prevent the deficiency. ：

2) 10 ~ 15-year-old girls' daily recommended intake is 4600 international units.

3)./kloc-The recommended daily intake for women over 0/6 years old is 4200 international units.

4). Adults need to eat about 85 lemons every day to meet their needs; Adults only need to eat 1/2 carrots a day; Adults only need to eat 1 slice of mango every day to meet the demand; Adults only need to eat 1 asparagus every day to meet the demand.